Card-grinder.



No. 783,565. PATENTED FEB. 28, 1905.

' R. J. AUBUOHONT.

(mm) GRINDER.

APPLICATION FILED JUNE 20,1904.

lua'tented l e bruary 2 s, 1 90 5- RIUHARD J'. AUBUCHONT, 0F WORCESTER, lVlASSACl-IUSIC'ETLS.

GARU GRRNDEH.

SPECIFICATION forming part of Letters Patent No. 783,565, dated February 28, 1905.

Application filed June 20, 1904. Serial No. 218,247'

To all w/to'nt it um/y concern.-

Be it known that l, ltrc mm) J. AUBUCIIONT, a sub ect of the King of England, residing at Worcester, m the county of \Vorcestcr and State of Massachusetts, have invented a new and useful Card-Grimler, of which the follo\ ing is a s iecilication.

} The object of this invention is to improve that class of grinding-niachines in which the rotating grinding member or wheel has a toand-fro axial movement; and the improvement consists in providing an adjusting mechanism directly on the machine by which the speed of this to-and-fro' axial movement can be varied relatively to the speed of rotation. This style of grinding-machine is used principally in grinding or truing the parts of carding engines. and 1 have found it desirable in such machines to provide an adjusting mechanism of the character before described so that the nature of the grinding may be varied and so that in some instances the grinding-wheel may be continued in rotation without any axial movement at all. The means hereinafter described have been devised to accomplish this function in a device of this character.

The improvements also relate to a detail by which the position of the grinding member can be adjusted.

Referring to the drawings and in detail Figure 1 is a sectional plan view of a device of the character referred to with my improvement applied thereto. Fig. 2 is aside elevation of the adjustable supportingmechanism. Fig. 3 is a cross-sectional view through the grinding member, and Fig. 1 is a detail of the adjusting mechanism.

Referring to the drawings and in detail, .10 1O designate base-pieces. Fitted to slide horizontally in each base-piece is an upright 11. The uprights are adjusted by means of screws 12. Fitted to slide vertically in each upright is a block 13. The blocks are adjusted vertically by screws 14. Pivoted in each block 13 a shank 15 extending from a right-angle shaped su 'iporting-piece 16, the uprights 11 being slotted vertically to allow the shanks to extend within the same. Pivoted in the horizontal part of each supporting-piece 16 is the shank. 17 of a journal-box 18. By this con struction the journal-boxes are free to pivot l'iorizontaily and vertically and may be adj usted both horizontally and vertically to vary and adjust the movement of the grinding member. Fitted in the left-hand journal-box is a sleeve 19, keyed on the outer end of which is a driving-pulley 20. Journalcd in this sleeve and in the right-hand journal-box 18 is a screw 21, the middle section of which is larger than the journaled portions and which is cut with a double or opposite thread. The left end of the screw 21 is threaded to receive checlcnuts 22 and A friction-wasluw 2 1, of vulcanite liber or other suitable material, is keyed to the left-hand end of said screw so as to come between the inner check-nut 23 and the end of the sleeve 19 and the hub of the driving-milley 20. A friction-washer 25 is also preferably arrangedbetween the inner flanged end of the sleeve .19 and the enlarged portion of the screw. By adjusting the check-nuts 22 and 23 an adjustable friction is obtained between the sleeve 19 and the screw 21.

Fitted on the right-hand reduced end of the double-cut screw 21 is a flange 2b. and extending between said flange and the flange of the inner end. of the sleeve 19 are rods 27 27.

28 designates the driving member, which is made in the form of a pulley or wheel, with abrading material applied to its periphery. The hub of the grinding member is litted on the double-threaded portion of the screw 21. The rods 27 27 extend through the ribs of the driving member, as shown in Fig. 3.

A yoke 29 is secured to theh ub of the grinding member, and extending into the central part of the same is the shank of a fork 30, which is arranged inside of the hub of the grinding member 28 to engage the double'cut thread. A cap 31 is threaded on the central portion of the yoke to embrace a spring 32, whereby the fork engages the double-cut thread with an adjustable spring tension. The ends of the double-cut making the screw are cam-shaped, whereby the pivoted fork 30 will reverse from one thread to the other, the double cuts of the screw being respectively right and left and arranged for this purpose. By this arrangement when there is any relative rotary motion between the grinding memher and the double-cut screw 21 the grinding member will move to and fro axially. As the driving-pulley 20 is rotated the rods 27 27 will be rotated and the grinding member re volved, but still left free to slide axially.

On the right-hand end of the screw 21 is arranged a friction-drum 33, embracing which is a strap or band 34, one end of which is secured to a shaft 35, which is journaled in a bracket extending from said upright and the other end of which is secured to said bracket. On the end of said shaft 35 is arranged a worm- Wheel 36, engaging which is a worm 37, mounted on a shaft 38, journaled in said bracket and having a handle or knob 39. The friction at the left-hand end of the screw in practice is adjusted so as to obtain a slight engagement between the sleeve and the double-cut screw. If now the parts at the right-hand side of the machine which constitute in substance an adjustable friction-brake are operated so that said brake is set, the screw 21 will be held stationary, and as the grinding member is rotated it will travel to and fro axially on said screw. On the other hand, if said frictionbrake be released the slight friction at the left-hand end of the structure will cause the double-cut screw 21 to turn with the grinding member, and hence as the member is rotated it will remain in one place or position axially. This gives an easy adjustment when it is required to grind on one place or position axially of the grinding member. Further, by adjusting the friction-brake at the right of the device a slipping action can be obtained between the double-cut screw and the sleeve, and this relative slipping action can be adjusted by adjusting the handle 39. By getting this slipping action the speed of the to-and-fro movement of the grinding member relatively to the rotation thereof can be adjusted to get different characters of grinding, and this adjustment can be made by parts directly on the machine without replacement and without stopping the operation of the machine, which is very advantageous in adjusting the mechanism to the particular work to be done. v

The details and arrangements herein described may be varied by a skilled mechanic without departing from the scope of my invention as expressed in the claims.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a grinding-machine, the combination of a grinding member, means for rotating the same, an oppositely-cut screw for moving the same to and fro axially driven from the rotation of the grinding member, and an adjusting mechanism carried directly by the machine, whereby the relative speed of rotation between the screw and grinding member can be varied.

2. In a grinding-machine, the combination of a grinding member, means for rotating the same, an oppositely-cut screw for moving the same to and fro axially, and a friction-brake applied to the screw.

3. In a grinding-machine, the combination of a grinding member, means for rotating the same, an oppositely-cut screw for moving the same to and fro axially, and a friction device between the screw and the means for rotating the driving member for driving the screw at a different speed relatively to the grinding member.

4. In a grinding-machine, the combination of a grinding member, means for rotating the same, an oppositely-cut screw for moving the same to and fro axially, an adjustable friction between the screw and the means for rotating the grinding member, and an adjustable friction-brake applied to the screw.

5. In a grinding-machine, the combination of a grinding member, means for rotating the same, an oppositelycut screw for moving the same to and fro axially, a friction-brake applied to the screw, and a worm and wormwheel for adjusting the friction.

In testimony whereof 1 have hereunto set my hand in the presence of two subscribing witnesses.

, RICHARD J. AUBUCHONT.

Vitnesses:

LoUIs WV. SOUTHGATE, LOUIS J. AUBUCHONT. 

